Graphite Sequencer
Graphite conducts electricity. Two wires brush against the surface of a paper disk as it spins. The wires are connected to a simple electronic tone generator. When a line of graphite is drawn across the disk, connecting two wires, a tone is heard. The quality of the line affects the sound. For example, if the line is thick, allowing more current to pass over it, the pitch changes to a lower tone.
Listen here.
(via Craftzine)
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t-phone
So you have a phone with a standard numeric keypad and one large call button underneath. You get a bunch of RFID tagged badges to program someone’s number and even insert their picture. When grammy wants to call someone, all she has to do is place the badge on the call button and press it. The phone reads the RFID information in the badge and dials the number.
By Jeong-Kyun Nam
(via Yanko Design)
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